The two adult Anna's looked at each other. They had babysat before but this was them they were dealing with, and for some reason that baffled them. They whispered to each other.
"What should we do with her?"
"I don't know. What would 'we' do at that age?"
"You expect me to remember that? I'd probably just follow my older self everywhere if I believed I was me."
"But you are me!" Her younger duplicate shouted from behind. They almost jumped back at the little doppleganger.
"S-sorry, didn't mean to..."
The two sighed. "Come with us, we've got to go."
A shopper came out of a nearby store. His eyes went pure white and mind turned to mush in the presence of Anna. All rational thoughts and sentience went towards becoming Anna, and like a moth to a porchlight charged at them.
"We have to go. NOW!"
Anna grabbed little Anna's hand and ran off with her 2 counterparts. There's no way they could explain another Anna transformation to young them, older Anna figured.